package com.ischoolbar.programmer.order.web.servlet;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.ischoolbar.programmer.config.AlipayConfig;

@WebServlet("/payOrder")
public class AlipayServlet extends HttpServlet {
	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
		
		//设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		// 同步跳转
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		// 异步跳转
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
		
		//商户订单号，商户网站订单系统中唯一订单号，必填
		Date date = new Date();
		long time = date.getTime();   
		String timeString=time+"";
		String mills = timeString.substring(timeString.length()-2);
		String out_trade_no = date.getYear() + (date.getMonth()+1) + date.getDay() + date.getHours() +date.getMinutes() +date.getSeconds() +mills;
		//付款金额，必填
		String total_amount =new String(request.getParameter("money").getBytes("ISO-8859-1"),"UTF-8");
		//订单名称，必填
		String subject = "网上书城系统";
		//商品描述，可空
		String body = new String("网上书城系统".getBytes("ISO-8859-1"),"UTF-8");
		
		
		alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
				+ "\"total_amount\":\""+ total_amount +"\"," 
				+ "\"subject\":\""+ subject +"\"," 
				+ "\"body\":\""+ body +"\"," 
				+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		
		
		//请求
		String result = "";
		try {
			result = alipayClient.pageExecute(alipayRequest).getBody();
		} catch (AlipayApiException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//输出到页面
		response.setContentType("text/html;charset=utf-8");
		response.getWriter().write(result);
		response.getWriter().flush();
		response.getWriter().close();
	}

	
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}
